全文获取类型
收费全文 | 3254篇 |
免费 | 135篇 |
国内免费 | 2篇 |
专业分类
电工技术 | 16篇 |
综合类 | 1篇 |
化学工业 | 610篇 |
金属工艺 | 28篇 |
机械仪表 | 43篇 |
建筑科学 | 162篇 |
矿业工程 | 6篇 |
能源动力 | 64篇 |
轻工业 | 362篇 |
水利工程 | 26篇 |
石油天然气 | 5篇 |
无线电 | 167篇 |
一般工业技术 | 529篇 |
冶金工业 | 1044篇 |
原子能技术 | 12篇 |
自动化技术 | 316篇 |
出版年
2023年 | 18篇 |
2022年 | 56篇 |
2021年 | 79篇 |
2020年 | 39篇 |
2019年 | 49篇 |
2018年 | 68篇 |
2017年 | 75篇 |
2016年 | 52篇 |
2015年 | 60篇 |
2014年 | 70篇 |
2013年 | 162篇 |
2012年 | 148篇 |
2011年 | 197篇 |
2010年 | 134篇 |
2009年 | 161篇 |
2008年 | 148篇 |
2007年 | 150篇 |
2006年 | 141篇 |
2005年 | 126篇 |
2004年 | 116篇 |
2003年 | 90篇 |
2002年 | 112篇 |
2001年 | 61篇 |
2000年 | 67篇 |
1999年 | 78篇 |
1998年 | 75篇 |
1997年 | 73篇 |
1996年 | 71篇 |
1995年 | 62篇 |
1994年 | 58篇 |
1993年 | 54篇 |
1992年 | 46篇 |
1991年 | 20篇 |
1990年 | 40篇 |
1989年 | 39篇 |
1988年 | 34篇 |
1987年 | 38篇 |
1986年 | 32篇 |
1985年 | 25篇 |
1984年 | 38篇 |
1983年 | 31篇 |
1982年 | 31篇 |
1981年 | 23篇 |
1980年 | 21篇 |
1979年 | 17篇 |
1978年 | 16篇 |
1977年 | 12篇 |
1976年 | 12篇 |
1975年 | 12篇 |
1974年 | 10篇 |
排序方式: 共有3391条查询结果,搜索用时 890 毫秒
31.
Rintala Diana H.; Young Mary Ellen; Hart Karen A.; Fuhrer Marcus J. 《Canadian Metallurgical Quarterly》1994,39(1):15
140 adults (aged 19–77 yrs) were randomly selected from a sampling frame of 661 persons with spinal cord injury. They completed a questionnaire assessing amount of social support, degree of reciprocity with supporters, and satisfaction with relationships with supporters; the Center for Epidemiologic Studies Depression Scale; a self-report version of the Functional Independence Measure; and the Craig Handicap Assessment and Reporting Technique. A physician assessed the degree of paralytic impairment by means of the ASIA Total Motor Index Score. Relationships in which the supporter gave more than the participant were associated with more satisfaction with the relationship and more social support. The number of reciprocal relationships was positively associated with more desirable outcomes in the handicap dimensions of mobility, occupation, social integration, and economic self-sufficiency. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
32.
Allen Karen; Linn Richard T.; Gutierrez Horacio; Willer Barry S. 《Canadian Metallurgical Quarterly》1994,39(1):29
Investigated burden experienced by 60 spouses and 71 parents who served as primary caregivers to individuals with traumatic brain injury (BI). Burden levels, as assessed by the Questionnaire on Resources and Stress (QRS-SF), were compared for spouses and parents. Both parents and spouses exhibited high levels of burden. Relative to spouses, parents reported significantly greater burden related to lifespan care. Spouses reported significantly less personal reward than did parents. The presence of social aggression and cognitive disability in the individual with BI was found to have a greater association with subjective burden of caregivers than was the presence of physical disability or injury severity. Results of previous studies with QRS-SF scores show that the responsibility assumed by spouses and parents of persons with BI was as great as that experienced by families of people with severe chronic physical disabilities. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
33.
H. H. Kendler (see record 1994-09190-001), in his article on psychology and the ethics of social policy, argues in part that ethical imperatives cannot be inferred from empirical data. This argument is cited in opposition to what is purported to be the position of the American Psychological Association on the abortion issue. It is suggested that PhD candidates in psychology be well versed in the philosophical issues and debates that are the foundation for the formation of ethical principles. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
34.
Barrett Lisa Feldman; Quigley Karen S.; Bliss-Moreau Eliza; Aronson Keith R. 《Canadian Metallurgical Quarterly》2004,87(5):684
People differ in the extent to which they emphasize feelings of activation or deactivation in their verbal reports of experienced emotion, termed arousal focus (AF). Two multimethod studies indicate that AF is linked to heightened interoceptive sensitivity (as measured by performance on a heartbeat detection task). People who were more sensitive to their heartbeats emphasized feelings of activation and deactivation when reporting their experiences of emotion over time more than did those who were less sensitive. This relationship was not accounted for by several other variables, including simple language effects. Implications for the role of interoception in experienced emotion and the validity of self-reported emotion are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
35.
The aim of this study was to demonstrate a correlation between the clinical assessment of narcissistic personality disorder in children and underlying self and object relationships. D. Westen's Social Cognition and Object Relations Scale for the Thematic Apperception Test (1995; D. Westen, N. Lohr, K. Silk, K. Kerber, & S. Goodrich, 1985) was used to compare the object representations of two groups of referred latency-aged children, one for whom narcissistic issues were thought to be primary. Support for the clinical literature, which describes these children as lacking in empathy, struggling with self-esteem regulation, and in poor control of their impulses or aggression, was found. Additionally, a tendency to have a vulnerable sense of identity and to be preoccupied with seeking out and developing relationships with others was found to differentiate these children from peers with similar behavioral and diagnostic profiles. Results obtained have potential implications for the assessment and treatment of narcissistically disturbed children. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
36.
Detecting Deception in Children: Event Familiarity Affects Criterion-Based Content Analysis Ratings.
37.
38.
Survivors of sexual abuse enter psychotherapy with special needs that challenge some of the traditional therapeutic assumptions. The therapeutic relationship, which is the foundation for treatment with abuse survivors, often must shift in nature and quality to address these needs. The main goal of treatment is the integration of self and affective experience. To facilitate this process the authors discuss the establishment and maintenance of an "affective edge" that allows for direct attention to and intervention with the trauma memories and the accompanying affect. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
39.
Pietromonaco Paula R.; Rook Karen S.; Lewis Megan A. 《Canadian Metallurgical Quarterly》1992,63(2):247
Addressed conflicting views of depressives' interpersonal accuracy in an investigation of the accuracy of mild depressives (dysphorics) across differing social contexts. Women who were either friends or strangers and who were either similar or dissimilar in level of dysphoria conversed about 3 topics: a neutral topic, their own disclosure of a personal problem, and their partner's disclosure. Dysphorics were not more accurate in general than nondysphorics. After self-disclosure, all women more accurately detected sympathy from a similar stranger. After the partner's disclosure, women also better detected the mood of a similar partner. When interacting with nondysphoric strangers, however, dysphorics underestimated their partner's sympathy toward them. Implications for cognitive and interpersonal theories of depression and for depressives' relationships are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
40.
It was proposed that thinking about disease-detection behavior would lead to more negative moods than thinking about health-promotion behavior. Detection behaviors produce more negative moods because they can threaten perceptions of good health. In a laboratory study, the initial mood states of 121 participants recruited from undergraduates and the general community were measured using a neutral-words rating procedure. Then participants were randomly assigned to think about performing a disease-detection behavior or a health-promotion behavior. Subsequently, they wrote down their responses to the behavior and evaluated these 35 either positive, negative, or neutral. Finally, the participant's mood was remeasured using both a neutral words-rating procedure and a more traditional bipolar rating measure. Results indicated that thought about disease-detection behavior produced more negative affective responses and more negative mood change than did thought about health-promotion behavior. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献